Re: [PATCH v3 1/4] gpio: brcmstb: fix null ptr dereference in driver remove

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 




On Thu, Jun 18, 2015 at 3:00 AM, Gregory Fong <gregory.0xf0@xxxxxxxxx> wrote:

> If a failure occurs during probe, brcmstb_gpio_remove() is called. In
> remove, we call platform_get_drvdata(), but at the time of failure in
> the probe the driver data hadn't yet been set which leads to a NULL
> ptr dereference in the remove's list_for_each.  Call
> platform_set_drvdata() and set up list head right after allocating the
> priv struct to both avoid the null pointer dereference that could
> occur today.  To guard against potential future changes, check for
> null pointer in remove.
>
> Reported-by: Tim Ross <tross@xxxxxxxxxxxx>
> Signed-off-by: Gregory Fong <gregory.0xf0@xxxxxxxxx>
> ---
> New in v3.

Patch applied.

Yours,
Linus Walleij
--
To unsubscribe from this list: send the line "unsubscribe devicetree" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html



[Index of Archives]     [Device Tree Compilter]     [Device Tree Spec]     [Linux Driver Backports]     [Video for Linux]     [Linux USB Devel]     [Linux PCI Devel]     [Linux Audio Users]     [Linux Kernel]     [Linux SCSI]     [XFree86]     [Yosemite Backpacking]
  Powered by Linux